National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Mostly Cloudy

49°F

9°C

Humidity 64%
Wind Speed NW 18 G 26 mph
Barometer 30.14 in (1021.8 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 19 May 12:53 pm CDT
Extended Forecast for

Willow Lake SD

Freeze Warning May 20, 01:00am until May 20, 08:00am
Click here for hazard details and duration
Freeze Warning

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 53. Northwest wind 15 to 18 mph, with gusts as high as 26 mph.

    High: 53 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy frost after 2am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 31. Northwest wind 8 to 13 mph becoming light and variable.

    Low: 31 °F

    Mostly Cloudy
    then Patchy
    Frost

  • Wednesday

    Wednesday: Widespread frost, mainly before 7am. Otherwise, increasing clouds, with a high near 62. South wind 7 to 15 mph, with gusts as high as 23 mph.

    High: 62 °F

    Frost then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 40. South southeast wind 11 to 14 mph.

    Low: 40 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 66. South southeast wind 14 to 18 mph.

    High: 66 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 43. Southeast wind 14 to 18 mph.

    Low: 43 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely, then showers and possibly a thunderstorm after 1pm. High near 59. East southeast wind 14 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.

    High: 59 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers, mainly before 1am. Mostly cloudy, with a low around 43. Southeast wind 7 to 9 mph. Chance of precipitation is 40%.

    Low: 43 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 70. South southwest wind 9 to 11 mph.

    High: 70 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Partly sunny, with a high near 53. Northwest wind 15 to 18 mph, with gusts as high as 26 mph.
Tonight
Patchy frost after 2am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 31. Northwest wind 8 to 13 mph becoming light and variable.
Wednesday
Widespread frost, mainly before 7am. Otherwise, increasing clouds, with a high near 62. South wind 7 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly cloudy, with a low around 40. South southeast wind 11 to 14 mph.
Thursday
Mostly sunny, with a high near 66. South southeast wind 14 to 18 mph.
Thursday Night
Mostly cloudy, with a low around 43. Southeast wind 14 to 18 mph.
Friday
Showers likely, then showers and possibly a thunderstorm after 1pm. High near 59. East southeast wind 14 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Friday Night
A chance of showers, mainly before 1am. Mostly cloudy, with a low around 43. Southeast wind 7 to 9 mph. Chance of precipitation is 40%.
Saturday
Mostly cloudy, with a high near 70. South southwest wind 9 to 11 mph.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 78. Breezy. Chance of precipitation is 20%.
Sunday Night
Mostly clear, with a low around 54.
Memorial Day
Sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Willow Lake SD
 44.62°N 97.65°W (Elev. 1762 ft)
Last Update:
12:56 pm CDT May 19, 2026
Forecast Valid:
1pm CDT May 19, 2026-6pm CDT May 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation